oyarzun opened a new pull request #2545:
URL: https://github.com/apache/netbeans/pull/2545
JDK is not found on macOS Big Sur due to changes the `/usr/libexec/java_home`
1. It no longer works with `--failfast` and a `+` used in the `-v` argument
2. It will return whatever is contained in the environment variable
`JAVA_HOME` regardless of arguments passed in.
3. if `JAVA_HOME` is set and is empty, it will return an empty string.
4. Removing `--failfast` does not break functionality on earlier versions of
macOS.
Below are tests run on clean install of macOS Big Sur running in a VM
```
% /usr/libexec/java_home -V
Matching Java Virtual Machines (3):
15.0.1 (x86_64) "AdoptOpenJDK" - "AdoptOpenJDK 15"
/Library/Java/JavaVirtualMachines/adoptopenjdk-15.jdk/Contents/Home
11.0.9 (x86_64) "AdoptOpenJDK" - "AdoptOpenJDK 11"
/Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home
1.8.0_275 (x86_64) "AdoptOpenJDK" - "AdoptOpenJDK 8"
/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/adoptopenjdk-15.jdk/Contents/Home
```
If you have the environment variable `JAVA_HOME` set, java_home will return
the value of `JAVA_HOME` regardless of the arguments provided to `java_home`.
```
% export
JAVA_HOME=/Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home
% /usr/libexec/java_home -v 1.8+ --failfast
/Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home
%
```
If `JAVA_HOME` is set to an empty string then an empty string is returned
from `java_home`.
```
% export JAVA_HOME=
% /usr/libexec/java_home -v 1.8+ --failfast
%
```
If JAVA_HOME is not set and you use a '+' in the '-v' and also have
'--failfast' it will not find a JDK.
```
% unset JAVA_HOME
% /usr/libexec/java_home -v 1.8+ --failfast
The operation couldn’t be completed. Unable to locate a Java Runtime that
supports (null).
Please visit http://www.java.com for information on installing Java.
```
The '-v' with a '+' works without '--failfast' but also returns the same as
not using '-v'
```
% unset JAVA_HOME
% /usr/libexec/java_home -v 1.8+
/Library/Java/JavaVirtualMachines/adoptopenjdk-15.jdk/Contents/Home
% /usr/libexec/java_home
/Library/Java/JavaVirtualMachines/adoptopenjdk-15.jdk/Contents/Home
%
```
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